I. Understanding the Basics of Gels
* What are Gels?
* Thin, transparent sheets of colored plastic (usually polycarbonate or polyester) that are placed in front of a light source to alter the color of the light it emits.
* Gel Sizes and Shapes:
* Come in various sizes, from small squares for speedlights to large rolls for studio strobes.
* Often rectangular, but can be cut to fit different light modifiers.
* Color Temperature and Wavelength:
* Gels work by selectively absorbing certain wavelengths of light and transmitting others. This changes the perceived color.
* Colors are defined by their wavelength, the shorter the wave length, the more violet and the longer the wave length, the redder the light.
* Gel Transmission and F-Stop Loss:
* Some gels are more dense, or opaque than others. This means they can affect the amount of light that passes through.
* Dense gels require adjustments to your camera settings to compensate.
* The "darker" the gel, the more f-stops you will need to open to allow sufficient light to hit the subject.
* Color Temperature Correction vs. Color Effects:
* Color Temperature Correction Gels: CTO (Color Temperature Orange) and CTB (Color Temperature Blue) gels are used to balance the color temperature of your light source to match the ambient light. For example, if shooting indoors under tungsten lighting with a flash, a CTO gel can warm the flash to match the tungsten.
* Color Effects Gels: These are used to create a specific color aesthetic. They come in a vast range of hues, from vibrant blues and reds to subtle pastels.
II. Equipment You'll Need
* Lights:
* Strobes: Studio strobes provide powerful and consistent light.
* Speedlights: Portable and versatile, but less powerful than strobes.
* Continuous Lights: Can be used, but may require adjustments for color temperature and power output.
* Gels:
* A variety of colors to experiment with. Start with a basic set, and expand as you gain experience.
* Consider gels from reputable brands for consistent color and durability. Rosco and Lee Filters are well-regarded.
* Gel Holders/Attachments:
* Gel Holders: Designed to hold gels securely in front of your light source. Many speedlights have dedicated gel attachment systems.
* Clips or Tape: For speedlights or smaller lights, you can use clips or gaffer tape (heat-resistant) to attach gels.
* Light Stands (if using strobes or speedlights off-camera)
* Light Modifiers (optional):
* Softboxes: Create soft, diffused light.
* Umbrellas: Another way to soften light.
* Snoots: Focus light into a tight beam.
* Honeycomb Grids: Restrict the spread of light and reduce spill.
III. Planning and Preparation
* Concept Development:
* Decide on the Mood: What feeling do you want to evoke? Warm colors (red, orange, yellow) create a sense of energy, passion, or warmth. Cool colors (blue, green, purple) create a sense of calmness, mystery, or sadness.
* Color Palette: Choose your colors deliberately. Complementary colors (opposite each other on the color wheel, e.g., red and green, blue and orange) create contrast and visual interest. Analogous colors (next to each other, e.g., blue and green) create a harmonious and softer look.
* Consider the Subject: The colors you choose should complement your subject's skin tone, clothing, and personality.
* Testing:
* Experiment with different gel combinations before the actual shoot.
* Take test shots to see how the colors interact with your camera's white balance.
* Evaluate light placement and intensity.
* Location Scouting (if applicable):
* Consider the existing ambient light and how it will interact with your gels.
* Look for backgrounds that will complement your chosen colors.
* Communicate with Your Model:
* Explain your concept and how the colors will be used.
* Make sure they're comfortable with the look and feel of the shoot.
IV. Lighting Techniques with Gels
* Single Light with a Gel:
* Simple Accent: Use a single gelled light as a key light or a rim light to add a pop of color and interest.
* Dramatic Lighting: Position the light to create strong shadows and highlight the color.
* Two Lights with Different Gels:
* Complementary Colors: Use two lights with gels in complementary colors (e.g., red and cyan) to create a dynamic and visually striking image. Position them on opposite sides of the subject.
* Analogous Colors: Use two lights with gels in analogous colors (e.g., blue and purple) for a softer, more harmonious look.
* One Key, One Accent: Use one light with a subtle gel as the key light and the other with a more vibrant gel as a rim light or background wash.
* Three or More Lights with Gels:
* Complex Color Schemes: This allows for more nuanced and layered color effects.
* Background Separation: Use a gelled light to separate the subject from the background.
* Shape and Dimension: Use differently colored lights to enhance the shape and form of your subject.
* Gelling the Background:
* Create a colored backdrop: Point a gelled light at a plain wall or backdrop to change its color.
* Project patterns: Use a gobo (a stencil placed in front of a light) in combination with a gel to project colored shapes or patterns onto the background.
* White Balance Adjustment:
* Custom White Balance: Use a gray card to set a custom white balance for each shot. This helps to ensure accurate color rendition.
* Adjust in Post: You can also adjust the white balance in post-processing to fine-tune the colors.
* Exposure:
* Meter Carefully: Gels absorb light, so you'll need to adjust your exposure accordingly. Use your camera's meter to determine the correct settings.
* Shoot in Manual Mode: This gives you complete control over your aperture, shutter speed, and ISO.
V. Creative Ideas and Inspiration
* Color Blocking: Create bold, geometric shapes with different colors.
* Monochromatic Color Schemes: Use different shades of the same color for a cohesive look.
* Double Exposure with Gels: Combine two images, each lit with different gels, to create a surreal effect.
* Silhouettes with Colored Backgrounds: Position your subject in front of a gelled background to create a striking silhouette.
* Use Gels to Mimic the Time of Day: Use warm gels for a sunrise/sunset look and cool gels for a moonlight look.
* Emulate Film Stocks: Use gels to mimic the look of classic film stocks.
* Match Gels to Makeup and Wardrobe: Create a harmonious look by coordinating the colors of your gels with your subject's makeup and clothing.
VI. Post-Processing Tips
* Color Correction: Fine-tune the colors in your editing software (e.g., Adobe Photoshop, Lightroom).
* Selective Color Adjustments: Use adjustment layers to target specific colors and make adjustments without affecting the entire image.
* Split Toning: Add subtle color casts to the highlights and shadows for a more stylized look.
VII. Safety Considerations
* Heat: Gels can get hot when placed in front of powerful lights. Use heat-resistant gels and keep a safe distance between the gel and the light source.
* Fire Hazard: Never leave lights with gels unattended.
* Damaged Gels: Regularly inspect your gels for damage and replace them if necessary.
VIII. Examples of Creative Applications
* Music Photography: Use vibrant colors to capture the energy of a live performance.
* Fashion Photography: Create bold and edgy looks with unexpected color combinations.
* Portrait Photography: Use gels to add personality and character to your portraits.
* Conceptual Photography: Use gels to create surreal and dreamlike images.
Key Takeaways
* Experimentation is key. Don't be afraid to try new things and break the rules.
* Understand color theory. Knowing how colors interact with each other will help you create more effective images.
* Practice, practice, practice. The more you work with gels, the better you'll become at using them creatively.
* Start simple. Begin with one or two lights and gradually add more as you gain experience.
* Have fun! Working with colored gels should be enjoyable. Let your creativity flow!
By following these guidelines and experimenting with different techniques, you can create stunning and unique portraits that showcase your artistic vision. Good luck!